Claude 3 Opus vs GPT-5.2

Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.

Quick Verdict

GPT-5.2 wins overall with a score of 83 vs 51 (32 point difference).GPT-5.2 wins 4 out of 4 categories.

Knowledge

GPT-5.2

Claude 3 Opus

59.5

GPT-5.2

96

61
MMLU
99
61
GPQA
97
59
SuperGPQA
95
57
OpenBookQA
93

Coding

GPT-5.2

Claude 3 Opus

53

GPT-5.2

91

53
HumanEval
91

Mathematics

GPT-5.2

Claude 3 Opus

60

GPT-5.2

97.1

61
AIME 2023
99
63
AIME 2024
99
62
AIME 2025
98
57
HMMT Feb 2023
95
59
HMMT Feb 2024
97
58
HMMT Feb 2025
96
60
BRUMO 2025
96

Reasoning

GPT-5.2

Claude 3 Opus

58

GPT-5.2

94

59
SimpleQA
95
57
MuSR
93

Frequently Asked Questions

Which is better, Claude 3 Opus or GPT-5.2?

GPT-5.2 scores higher overall with 83 vs 51, a difference of 32 points across all benchmarks.

Which is better for knowledge tasks, Claude 3 Opus or GPT-5.2?

GPT-5.2 leads in knowledge tasks with an average score of 96 vs 59.5.

Which is better for coding, Claude 3 Opus or GPT-5.2?

GPT-5.2 leads in coding with an average score of 91 vs 53.

Which is better for math, Claude 3 Opus or GPT-5.2?

GPT-5.2 leads in math with an average score of 97.1 vs 60.

Which is better for reasoning, Claude 3 Opus or GPT-5.2?

GPT-5.2 leads in reasoning with an average score of 94 vs 58.